A solution on Windows would be UltraEdit. You edit your code in that, and then when you want to compile, you switch to QtCreator and hit the compile hotkey. I do this at work as the IDE they use is garbage - notepad would be better! (Seriously, for a £3000 product, you wouldn't expect the line to flicker after each character typed due to the constant redrawing)
There are similar alternatives for Linux.
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